Industrial Scientific Ventis MX4 Product Manual page 30

Ventis™ MX4 Product Manual
C. Diffusion with positive flow regulator
Attach either end of the tubing to the cylinder's nipple.
Attach the other end of the tubing to the calibration cup's nipple.
DO NOT ATTACH THE CALIBRATION CUP TO THE MONITOR OR APPLY THE GAS BEFORE
REACHING THE "APPLY GAS SCREEN". If gas is applied before that point, the monitor will go into
alarm and a failure will be logged.
Zero and Quick Calibration Process
Display and Options
Gas Monitoring Screen
Numeric mode display (left)
Text mode display (right)
Displays the gas concentration readings (or gas names
in text mode) for all installed sensors. If a sensor is NOT
installed, its position on the LCD is blank.
Days Since Calibration Screen
Displays the number of days since the last successful
calibration for each installed sensor. Each value can be
different.
NOTE: When zero, calibration, and bump test are ALL in-field enabled, and the user has entered zero from the gas
monitoring mode, the monitor expects to be calibrated following a successful zero.
If the desired task, after zero, is bump testing (or clearing the peaks) and NOT calibration, follow the instructions at
the Calibration Apply Gas Screen to terminate calibration.
Zero Initiate Screen
Options:
Enter Zero
Bypass Zero
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Instructions
Press ON/OFF/MODE to advance to the Days since
Calibration Screen.
Press ON/OFF/MODE to advance to one of three
screens.
If zero in-field is enabled, the user advances to the Zero
Initiate Screen.
If zero in-field is disabled and bump test in-field is
enabled, the user advances to the Bump Test Initiate
Screen.
If zero in-field and bump test in-field are both disabled,
the user advances to the Peak Readings Screen.
Press ENTER to begin the zero process and advance to
the Zero In-process Screen.
Press ON/OFF/MODE to bypass zero and calibration
and advance to one of two screens.
If bump test in-field is enabled, the user advances to the
Bump Test Initiate Screen.
If bump test in-field is disabled, the user advances to the
Peak Readings Screen.
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